102 lines
3.6 KiB
C
102 lines
3.6 KiB
C
/*
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* * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Code Aurora Forum, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <reg.h>
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#include <platform/iomap.h>
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#include <platform/pmic.h>
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typedef int (*pm8058_write_func) (unsigned char *, unsigned short,
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unsigned short);
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extern int pa1_ssbi2_write_bytes(unsigned char *buffer, unsigned short length,
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unsigned short slave_addr);
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/*PM8058*/
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void pm8058_write_one(unsigned data, unsigned address)
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{
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pm8058_write_func wr_function = &pa1_ssbi2_write_bytes;
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if (wr_function == NULL)
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return;
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if ((*wr_function) (&data, 1, address))
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dprintf(CRITICAL, "Error in initializing register\n");
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}
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/*PM8901*/
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extern int pa2_ssbi2_write_bytes(unsigned char *buffer, unsigned short length,
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unsigned short slave_addr);
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extern int pa2_ssbi2_read_bytes(unsigned char *buffer, unsigned short length,
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unsigned short slave_addr);
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/*
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* Write to the control registers on PMIC via the SSBI2 interface.
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* Returns : (0) on success and (-1) on error.
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*/
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int pm8901_write(uint8_t * buffer, uint32_t length, uint32_t slave_addr)
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{
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return pa2_ssbi2_write_bytes(buffer, length, slave_addr);
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}
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/*
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* Read from the control registers on PMIC via the SSBI2 interface.
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* Returns : (0) on success and (-1) on error.
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*/
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int pm8901_read(uint8_t * buffer, uint32_t length, uint32_t slave_addr)
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{
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return pa2_ssbi2_read_bytes(buffer, length, slave_addr);
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}
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/*
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* PMIC 8901 LDO vreg read.
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*/
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int pm8901_test_bank_read(uint8_t * buffer, uint8_t bank, uint16_t addr)
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{
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int ret = pm8901_write(&bank, 1, addr);
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/* if the write does not work we can't read. */
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if (ret) {
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return ret;
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}
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return pm8901_read(buffer, 1, addr);
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}
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/*
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* PMIC 8901 LDO vreg write.
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*/
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int pm8901_vreg_write(uint8_t * buffer, uint8_t mask, uint16_t addr,
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uint8_t prev_val)
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{
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uint8_t reg;
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/* Clear the bits we want to try and set. */
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reg = (prev_val & ~mask);
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/* Set the bits we want to set, before writing them to addr */
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reg |= (*buffer & mask);
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return pm8901_write(®, 1, addr);
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}
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